1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <stdio.h>
6
7 #include "ppapi/cpp/completion_callback.h"
8 #include "ppapi/cpp/graphics_2d.h"
9 #include "ppapi/cpp/image_data.h"
10 #include "ppapi/cpp/instance.h"
11 #include "ppapi/cpp/module.h"
12 #include "ppapi/cpp/rect.h"
13 #include "ppapi/cpp/size.h"
14 #include "ppapi/cpp/trusted/browser_font_trusted.h"
15
DummyCompletionCallback(void *,int32_t)16 static void DummyCompletionCallback(void* /*user_data*/, int32_t /*result*/) {
17 }
18
19 class MyInstance : public pp::Instance {
20 public:
MyInstance(PP_Instance instance)21 MyInstance(PP_Instance instance)
22 : pp::Instance(instance) {
23 }
24
DidChangeView(const pp::Rect & position,const pp::Rect & clip)25 virtual void DidChangeView(const pp::Rect& position, const pp::Rect& clip) {
26 if (position.size() == last_size_)
27 return;
28 last_size_ = position.size();
29
30 pp::ImageData image(this, PP_IMAGEDATAFORMAT_BGRA_PREMUL, last_size_, true);
31 pp::Graphics2D graphics(this, last_size_, false);
32 BindGraphics(graphics);
33
34 pp::BrowserFontDescription desc;
35 desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SANSSERIF);
36 desc.set_size(100);
37 pp::BrowserFont_Trusted font(this, desc);
38
39 // Draw some large, alpha blended text, including Arabic shaping.
40 pp::Rect text_clip(position.size()); // Use entire bounds for clip.
41 font.DrawTextAt(&image,
42 pp::BrowserFontTextRun(
43 "\xD9\x85\xD8\xB1\xD8\xAD\xD8\xA8\xD8\xA7\xE2\x80\x8E", true, true),
44 pp::Point(20, 100), 0x80008000, clip, false);
45
46 // Draw the default font names and sizes.
47 int y = 160;
48 {
49 pp::BrowserFontDescription desc;
50 pp::BrowserFont_Trusted default_font(this, desc);
51 default_font.DrawSimpleText(
52 &image, DescribeFont(default_font, "Default font"),
53 pp::Point(10, y), 0xFF000000);
54 y += 20;
55 }
56 {
57 pp::BrowserFontDescription desc;
58 desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SERIF);
59 pp::BrowserFont_Trusted serif_font(this, desc);
60 serif_font.DrawSimpleText(
61 &image, DescribeFont(serif_font, "Serif font"),
62 pp::Point(10, y), 0xFF000000);
63 y += 20;
64 }
65 {
66 pp::BrowserFontDescription desc;
67 desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SANSSERIF);
68 pp::BrowserFont_Trusted sans_serif_font(this, desc);
69 sans_serif_font.DrawSimpleText(
70 &image, DescribeFont(sans_serif_font, "Sans serif font"),
71 pp::Point(10, y), 0xFF000000);
72 y += 20;
73 }
74 {
75 pp::BrowserFontDescription desc;
76 desc.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_MONOSPACE);
77 pp::BrowserFont_Trusted monospace_font(this, desc);
78 monospace_font.DrawSimpleText(
79 &image, DescribeFont(monospace_font, "Monospace font"),
80 pp::Point(10, y), 0xFF000000);
81 y += 20;
82 }
83
84 graphics.PaintImageData(image, pp::Point(0, 0));
85 graphics.Flush(pp::CompletionCallback(&DummyCompletionCallback, NULL));
86 }
87
88 private:
89 // Returns a string describing the given font, using the given title.
DescribeFont(const pp::BrowserFont_Trusted & font,const char * title)90 std::string DescribeFont(const pp::BrowserFont_Trusted& font,
91 const char* title) {
92 pp::BrowserFontDescription desc;
93 PP_BrowserFont_Trusted_Metrics metrics;
94 font.Describe(&desc, &metrics);
95
96 char buf[256];
97 sprintf(buf, "%s = %s %dpt",
98 title, desc.face().AsString().c_str(), desc.size());
99 return std::string(buf);
100 }
101
102 pp::Size last_size_;
103 };
104
105 class MyModule : public pp::Module {
106 public:
CreateInstance(PP_Instance instance)107 virtual pp::Instance* CreateInstance(PP_Instance instance) {
108 return new MyInstance(instance);
109 }
110 };
111
112 namespace pp {
113
114 // Factory function for your specialization of the Module object.
CreateModule()115 Module* CreateModule() {
116 return new MyModule();
117 }
118
119 } // namespace pp
120